Spike's Tactical Bolt Carrier Group M16, Nickel Boron - ST5BG05

Spikes Tactical BCG 5.56 M16 w/HPT/MPI Bolt Lightweight - Nickel Boron Finish. These Bolt Carrier Groups by Spikes Tactical have shot peened bolts that are CNC machined from 158 carpenter steel and a mil-spec tool steel carrier key that is expertly attached with grade 8 hardware and properly staked. The Spike's Tactical AR15 Bolt Carrier Group BCG is complete with a mil-spec tool steel extractor a black extractor spring insert and a Viton o-ring. When you need a high quality durable bolt carrier choose the Spike's Tactical Advanced Bolt Carrier Group BCG. Specifications for Spikes Tactical M16 Bolt Carrier Group (BCG): Manufacturer: Spikes Tactical Color: Silver Fabric/Material: 8620 Tool Steel Cartridge: 5.56x45mm NATO Additional Features: Full Auto M-16 Condition: New Bolt Material: Steel Carrier Material: 8620 Steel Country of Origin: USA Features of Spike's Tactical Lightweight BCG 2A8-BCG-STBCGSP: Mil-Spec 8620 tool steel w/shrouded firing pin. Bolts are CNC machined from Carpenter No. 158. Mil-Spec tool steel carrier key attached with Grade 8 hardware and properly staked. Bolt is shot peened and HPT/MPI Mil-Spec Tool steel extractor black extractor spring insert and Viton o-ring. Package Contents: Spike's Tactical M16 Bolt Carrier Group 2A8-BCG-STBCGSP Spikes Tactical ST5BG05 Bolt Carrier Group - Lightweight Nickel Boron HPT/MPI M1